Researchers randomly divide 100 people into two groups, each of which have 50 subjects. the group is given pills that contain a very high amount of thiamin. the control group is given similar tasting and appearing pills that do not contain thiamin.

treatment                                                  

Explanation:

Treatment group: In psychological research, the term treatment group is defined as a particular set of participants in an experiment that are vulnerable to any sort of manipulation or changes made by the experimenter in the independent variable. It is considered as an integral or important part of particular research that is responsible for helping in the measurement of effects and establishes causality.

In the question above, the given statement signifies the treatment group.

With passage to the Colonies expensive for all but the wealthy, the Virginia Company developed the system of indentured servitude to attract workers. Indentured servants became vital to the colonial economy. The timing of the Virginia colony was ideal.

Explanation:

India

When slavery ended in the British Empire in 1833, plantation owners turned to indentured servitude for inexpensive labor. These servants arrived from across the globe; the majority came from India where many indentured laborers came from to work in colonies requiring manual labor.